Mobile Light Force 2, released as Shikigami no Shiro (式神の城) in Japan, is a 2001 shoot 'em up originally released as an arcade game and later ported to the PlayStation 2, Xbox, and PC. It is the first game in the Shikigami no Shiro series. Shikigami no Shiro Evolution (式神の城 EVOLUTION) is a revised version for Xbox. Shikigami no Shiro EX is a Windows port of the first Xbox game.

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When holding down the attack button, the player moves at slower speed, and all on-screen items are automatically retrieved. The player character is invulnerable when a special attack is in effect. When the player character is close to an enemy bullet, the poings gained from destroying enemies and retrieving items is multiplied by a factor based on the distance between the bullet and the player character's center. The closer they are to the bullet, the higher the scoring. When destroying enemy in shikigami mode, the multiplier also applies to the number of items dropped by enemy and all items dropped by the enemy are automatically retrieved.

The Xbox release adds Practice mode, Gallery, and Replay mode, while the PlayStation 2 release adds Practice mode, Gallery, and Side Story modes.Windows includes I.R. mode and vertical screen layout from the arcade game. The North American and European releases of the game removed the screen rotation mode and all in-game plot.

In July 2005, a string of serial murders take place in Tokyo. All the victims are female and killed by external injury. The killings take place within 20 hours. On July 21, the 31st victim is found. The police force classify the case as special crime #568, and begin to seek investigators from occult sources. On July 23, there is a 32nd victim.

Shikigami no Shiro Evolution was released in two separate versions, a red (藍,kurenai?) version which included a database containing character gallery, trailers, and unused voices, and a blue (藍,ai?) version which included developer videos. Both versions have improved enemy AI, new characters, a vertical screen mode, and the new Evolution Mode game mode.

GameSpot's Tyler Winegarner praised the game for the different techniques required depending on the character being used and the way it rewards players for performing risky maneuvers. He criticized the subpar graphics, unconvincing voice acting, and lack of variety in sound effects, but also acknowledged that these all add a retro charm, remarking that "The game is clearly out of its time in a way that longstanding fans of this niche genre will appreciate." They scored it a 6.8 out of 10.[1]

A comic version was written by Tooru Zekuu (aka Shinji Takano) and illustrated by Yuuna Takanagi, serialized in the monthly Magazine Z. Three volumes were published under Kodansha's Magazine Z KC label.